Set of key buttons for a handset



FIG. 1 is a front view of a set of key buttons for a handset showing mynew design; and,

FIG. 2 is a perspective front view thereof.

The broken line showings of the remainder of the handset are forillustrative purposes only and form no part of the claimed design.

The ornamental design for a set of key buttons for a handset, as shownand described.